panic: missing alias Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 147819 9840 0 0 0 0 syz-executor *165423 42868 0 0x2 0 1K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8333daa6) at panic+0x1e5 sys/kern/subr_prf.c:198 vgonel(fffffd8064724030,ffff8000ffffd488) at vgonel+0x681 sys/kern/vfs_subr.c:1217 vrecycle(fffffd8064724030,ffff8000ffffd488) at vrecycle+0x7c sys/kern/vfs_subr.c:1143 ufs_inactive(ffff80002a3b20d8) at ufs_inactive+0x360 sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd8064724030,ffff8000ffffd488) at VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:498 vput(fffffd8064724030) at vput+0xe5 sys/kern/vfs_subr.c:796 VOP_REMOVE(fffffd8071477550,fffffd8064724030,ffff80002a3b2258) at VOP_REMOVE+0x19d sys/kern/vfs_vops.c:336 dounlinkat(ffff8000ffffd488,ffffff9c,79c3833ed2c0,0) at dounlinkat+0x177 sys/kern/vfs_syscalls.c:1900 syscall(ffff80002a3b23d0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3b23d0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x79c3833ed770, count: 4 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: missing alias ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8333daa6) at panic+0x1e5 sys/kern/subr_prf.c:198 vgonel(fffffd8064724030,ffff8000ffffd488) at vgonel+0x681 sys/kern/vfs_subr.c:1217 vrecycle(fffffd8064724030,ffff8000ffffd488) at vrecycle+0x7c sys/kern/vfs_subr.c:1143 ufs_inactive(ffff80002a3b20d8) at ufs_inactive+0x360 sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd8064724030,ffff8000ffffd488) at VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:498 vput(fffffd8064724030) at vput+0xe5 sys/kern/vfs_subr.c:796 VOP_REMOVE(fffffd8071477550,fffffd8064724030,ffff80002a3b2258) at VOP_REMOVE+0x19d sys/kern/vfs_vops.c:336 dounlinkat(ffff8000ffffd488,ffffff9c,79c3833ed2c0,0) at dounlinkat+0x177 sys/kern/vfs_syscalls.c:1900 syscall(ffff80002a3b23d0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3b23d0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x79c3833ed770, count: -11 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a3b1f10 rbx 0xffff8000299dedd7 rdx 0 rcx 0xffff8000ffffd488 rax 0xffff8000299ddff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x72a29a0ca702d32d r11 0x3046f5a021d0b50b r12 0xffff8000299debd8 r13 0 r14 0 r15 0x1 rip 0xffffffff810e22e5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a3b1f00 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=165423 pid=42868 tcnt=1 stat=onproc flags process=2 proc=0 runpri=17, usrpri=84, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffffcf68,0xffff8000ffffd208 process=0xffff8000fffef400 user=0xffff80002a3ad000, vmspace=0xfffffd800b026000 estcpu=36, cpticks=0, pctcpu=0.20, user=7, sys=109, intr=2 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 51656 232192 98243 0 2 0 syz-executor 51656 270075 98243 0 2 0x4000000 syz-executor 9840 147819 4069 0 7 0 syz-executor 9840 413935 4069 0 3 0x4000080 fsleep syz-executor 35288 84517 9139 0 2 0 syz-executor 35288 140514 9139 0 3 0x4000080 fsleep syz-executor 14839 259961 55201 0 2 0 syz-executor 14839 350603 55201 0 3 0x4000080 fsleep syz-executor 14839 166716 55201 0 3 0x4000000 biowait syz-executor 46666 152495 1 0 3 0x100083 ttyin getty 9139 165065 42315 0 3 0x82 nanoslp syz-executor 17061 23930 0 0 3 0x14200 bored sosplice 15095 510232 0 0 3 0x14280 nfsidl nfsio 74339 127490 0 0 3 0x14280 nfsidl nfsio 99681 351725 0 0 3 0x14280 nfsidl nfsio 87266 293778 0 0 3 0x14280 nfsidl nfsio 2097 41963 0 0 3 0x14280 nfsidl nfsio 57386 442904 0 0 3 0x14280 nfsidl nfsio 56670 353459 0 0 3 0x14280 nfsidl nfsio 34955 102868 0 0 3 0x14280 nfsidl nfsio 34778 259704 0 0 3 0x14280 nfsidl nfsio 47815 169462 0 0 3 0x14280 nfsidl nfsio 98772 271849 0 0 3 0x14280 nfsidl nfsio 43591 151348 0 0 3 0x14280 nfsidl nfsio 51859 251077 0 0 3 0x14280 nfsidl nfsio 62254 478903 0 0 3 0x14280 nfsidl nfsio 24563 493536 0 0 3 0x14280 nfsidl nfsio 7174 219001 0 0 3 0x14280 nfsidl nfsio 85022 27878 0 0 3 0x14280 nfsidl nfsio 34855 175731 0 0 3 0x14280 nfsidl nfsio 8257 209422 0 0 3 0x14280 nfsidl nfsio 78001 194457 0 0 3 0x14280 nfsidl nfsio 55201 365693 42315 0 3 0x82 nanoslp syz-executor *42868 165423 42315 0 7 0x2 syz-executor 98243 125550 42315 0 3 0x82 nanoslp syz-executor 17342 234411 42315 0 2 0x2 syz-executor 32859 383015 42315 0 3 0x82 piperd syz-executor 37718 464851 42315 0 3 0x82 piperd syz-executor 4069 170641 42315 0 3 0x82 nanoslp syz-executor 42315 200215 24085 0 2 0x2 syz-executor 24085 95190 35632 0 3 0x10008a sigsusp ksh 35632 422915 54847 0 3 0x98 kqread sshd-session 54847 363290 38383 0 3 0x92 kqread sshd-session 38383 370642 1 0 3 0x88 kqread sshd 4072 511586 15629 74 3 0x1100092 bpf pflogd 15629 380168 1 0 3 0x80 sbwait pflogd 69897 407681 28188 73 3 0x1100090 kqread syslogd 28188 218307 1 0 3 0x100082 sbwait syslogd 37481 277346 1 0 3 0x100080 kqread resolvd 53855 287282 35879 77 3 0x100092 kqread dhcpleased 46269 57704 35879 77 3 0x100092 kqread dhcpleased 35879 281770 1 0 3 0x80 kqread dhcpleased 50085 337082 0 0 3 0x14200 bored smr 84765 263190 0 0 2 0x14200 zerothread 35777 141585 0 0 3 0x14200 aiodoned aiodoned 36054 217168 0 0 3 0x14200 syncer update 97083 244882 0 0 3 0x14200 cleaner cleaner 12057 491932 0 0 3 0x14200 reaper reaper 95755 63642 0 0 3 0x14200 pgdaemon pagedaemon 45460 480894 0 0 3 0x14200 bored viomb 53463 392309 0 0 3 0x40014200 acpi0 acpi0 14639 163029 0 0 3 0x40014200 idle1 67443 458106 0 0 3 0x14200 bored softnet3 89937 134790 0 0 3 0x14200 bored softnet2 40964 192393 0 0 3 0x14200 bored softnet1 61136 377386 0 0 3 0x14200 bored softnet0 23800 299383 0 0 3 0x14200 bored systqmp 88029 451835 0 0 3 0x14200 bored systq 14690 357647 0 0 3 0x14200 tmoslp softclockmp 84239 132568 0 0 3 0x40014200 tmoslp softclock 23272 170330 0 0 3 0x40014200 idle0 1 71451 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 14839 (syz-executor) thread 0xffff80003c4ebc68 (166716) Process 42868 (syz-executor) thread 0xffff8000ffffd488 (165423) Process 17342 (syz-executor) thread 0xffff80002a2b5498 (234411) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10204 11042K 11627K 166960K 15556 0 pcb 17 12K 12K 166960K 232 0 rtable 185 12K 13K 166960K 618 0 pf 28 16K 81K 166960K 222 0 ifaddr 31 6K 8K 166960K 154 0 ifgroup 43 2K 2K 166960K 275 0 sysctl 4 1K 9K 166960K 16 0 counters 62 36K 38K 166960K 344 0 ioctlops 0 0K 4K 166960K 1751 0 iov 0 0K 16K 166960K 69 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1338 84K 85K 166960K 3631 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 6K 166960K 20 0 VM map 2 1K 1K 166960K 2 0 sem 14 40K 41K 166960K 18 0 dirhash 15 2K 3K 166960K 51 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 15 53K 89K 166960K 3860 0 sigio 0 0K 0K 166960K 41 0 proc 74 91K 115K 166960K 686 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 218 0 in_multi 58 4K 7K 166960K 204 0 ether_multi 1 0K 0K 166960K 21 0 mrt 1 0K 0K 166960K 7 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 515 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 218 152K 163K 166960K 34066 0 UVM aobj 26 2K 2K 166960K 29 0 pinsyscall 40 80K 102K 166960K 5122 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 110 0 NDP 9 0K 2K 166960K 107 0 temp 80 8684K 8808K 166960K 64149 0 kqueue 13 20K 29K 166960K 275 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 109 0 106 1 0 1 1 0 8 0 rtentry 176 192 0 123 6 0 6 6 0 8 0 unpcb 144 819 0 802 4 2 2 2 0 8 1 syncache 336 33 0 33 2 1 1 1 0 8 1 tcpqe 32 15 0 15 3 3 0 1 0 8 0 tcpcb 808 609 0 596 3 0 3 3 0 8 0 arp 128 27 0 11 1 0 1 1 0 8 0 inpcb 384 1766 0 1748 4 0 4 4 0 8 0 nd6 144 33 0 20 2 0 2 2 0 8 0 pkpcb 40 14 0 14 5 5 0 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 113 0 113 4 3 1 1 0 8 1 pppxif 1504 18 0 18 6 5 1 1 0 8 1 pffrag 232 21 0 16 1 0 1 1 0 482 0 pffrnode 88 19 0 14 1 0 1 1 0 8 0 pffrent 40 34 0 29 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 2 0 2 2 1 1 1 0 8 1 pfstitem 24 218 0 92 1 0 1 1 0 8 0 pfstkey 128 218 0 92 5 0 5 5 0 8 0 pfstate 384 218 0 92 14 1 13 13 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 862 0 578 32 10 22 31 0 8 0 art_table 32 866 0 578 4 0 4 4 0 8 0 art_node 16 183 0 128 1 0 1 1 0 8 0 sysvmsgpl 40 30 0 24 1 0 1 1 0 8 0 semupl 112 5 0 5 3 3 0 1 0 8 0 semapl 112 13 0 1 1 0 1 1 0 8 0 shmpl 112 26 0 3 1 0 1 1 0 8 0 dirhash 1024 43 0 24 3 0 3 3 0 8 0 dino2pl 256 7015 0 5509 95 0 95 95 0 8 0 ffsino 288 7015 0 5509 109 0 109 109 0 8 0 nchpl 144 11213 0 9524 63 0 63 63 0 8 0 rtmask 32 27 0 27 2 1 1 1 0 8 1 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 29195 0 29193 2 1 1 1 0 8 0 percpumem 16 187 0 141 1 0 1 1 0 8 0 kstatmem 264 176 0 156 5 3 2 3 0 8 0 scsiplug 72 5 0 5 4 4 0 1 0 8 0 scxspl 216 34285 0 34284 14 13 1 8 1 8 0 plimitpl 152 210 0 193 1 0 1 1 0 8 0 sigapl 424 4211 0 4143 10 1 9 9 0 8 0 knotepl 120 381 0 0 11 1 10 10 0 8 0 kqueuepl 224 484 0 475 2 1 1 2 0 8 0 pipepl 336 201 0 173 4 1 3 3 0 8 0 fdescpl 520 4170 0 4141 3 0 3 3 0 8 0 filepl 160 12304 0 12091 10 0 10 10 0 8 0 lockfpl 104 386 0 384 1 0 1 1 0 8 0 lockfspl 48 165 0 163 1 0 1 1 0 8 0 sessionpl 144 55 0 46 1 0 1 1 0 8 0 pgrppl 48 102 0 85 1 0 1 1 0 8 0 ucredpl 104 1536 0 1522 1 0 1 1 0 8 0 zombiepl 144 5128 0 5128 3 2 1 1 0 8 1 processpl 1208 4211 0 4143 6 0 6 6 0 8 0 procpl 656 8935 0 8862 10 2 8 10 0 8 0 srpgc 96 8 0 8 4 4 0 1 0 8 0 sosppl 168 47 0 47 2 1 1 1 0 8 1 sockpl 728 2723 0 2687 9 3 6 6 0 8 1 mcl64k 65536 22 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 9 0 0 1 0 1 1 0 8 0 mcl8k 8192 18 0 0 3 0 3 3 0 8 0 mcl4k 4096 120 0 0 15 0 15 15 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 23 0 0 3 0 3 3 0 8 0 mtagpl 96 149 0 0 4 0 4 4 0 8 0 mbufpl 256 1196 0 0 75 0 75 75 0 8 0 bufpl 280 9931 0 3789 440 1 439 440 0 8 0 anonpl 32 12596 0 0 101 0 101 101 0 246 0 amapchunkpl 152 115396 0 114932 45 20 25 27 0 158 1 amappl16 200 7536 0 7496 57 44 13 28 0 8 8 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 190 0 178 1 0 1 1 0 8 0 amappl13 176 6 0 6 2 2 0 1 0 8 0 amappl12 168 4864 0 4836 3 1 2 2 0 8 0 amappl11 160 53 0 39 1 0 1 1 0 8 0 amappl10 152 6 0 6 1 1 0 1 0 8 0 amappl9 144 252 0 251 1 0 1 1 0 8 0 amappl8 136 44 0 41 1 0 1 1 0 8 0 amappl7 128 137 0 125 1 0 1 1 0 8 0 amappl6 120 214 0 211 2 1 1 1 0 8 0 amappl5 112 150 0 141 1 0 1 1 0 8 0 amappl4 104 440 0 421 1 0 1 1 0 8 0 amappl3 96 25451 0 25360 7 3 4 4 0 8 0 amappl2 88 885 0 824 2 0 2 2 0 8 0 amappl1 80 29972 0 29378 18 3 15 15 0 8 0 amappl 88 32935 0 32790 7 2 5 5 0 92 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma8192 8192 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma256 256 8 0 8 3 2 1 1 0 8 1 dma128 128 254 0 254 2 2 0 1 0 8 0 dma64 64 7 0 7 2 2 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 28 0 3 1 0 1 1 0 8 0 uaddrrnd 24 4170 0 4141 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4170 0 4141 1 0 1 1 0 8 0 vmmpekpl 168 31747 0 31700 3 0 3 3 0 8 0 vmmpepl 168 255463 0 253585 126 26 100 107 0 357 5 vmsppl 480 4169 0 4141 7 2 5 5 0 8 0 rwobjpl 72 65033 0 58164 136 6 130 134 0 8 1 pdppl 4096 8347 0 8282 139 68 71 85 0 8 6 pvpl 32 19763 0 0 160 1 159 159 0 265 0 pmappl 256 4169 0 4141 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 507 0 88 13 0 13 13 0 8 0 ddb{1}> machine ddbcpu 0